燃气轮发电机变频启动特点和保护配置分析  

Analysis of Several Problems about Large Scale Gas Turbine Generator Protection Configuration and Operation Characteristics

作　　者：范瑾[1] 牛利涛[2] 

机构地区：[1]西安邮电大学电子工程学院,西安710061 [2]西安热工研究院,西安710032

出　　处：《电力与能源》2012年第5期433-436,440,共5页Power & Energy

摘　　要：结合西门子燃机和三菱燃机的典型配置,介绍了燃气轮发电机静态变频启动(SFC)装置的结构、工作原理和保护配置。基于燃气轮发电机SFC的步骤,分析了SFC的特点以及对发电机保护的影响。通过理解和分析低频过流保护、SFC装置直流接地保护的设计思想,提出了减少燃气轮发电机SFC过程中,防止发电机差动保护、频率保护和逆功率保护误动的措施,实际运行表明这些技术措施是可行的。Conbined Mitsubishi gas turbine generator typical configuration with Siemens gas turbine generator typical configuration,the composition of the static frequency converter for gas turbine generator was introduced as well as working principle and protection configuration firstly,then based on the variable frequency starting process,we analyzed the characteristics of variable frequency starting,so we can make it clear that the influence of generator protection caused by variable frequency starting.Based on the above discussion,we analyzed the design principle of the low frequency over current protection and SFC DC earthing protection,and give some corresponding methods which can effectively reduce the possibility of false action for differential protection,frequency protection,and reverse power protection during the variable frequency starting process of generator.This may provide references for other similar works.

关 键 词：静态变频启动 直流接地保护 差动保护 逆功率保护 

分 类 号：TM773[电气工程—电力系统及自动化]